[][dts: mt7986: Fix web upgrade failure]

[Description]
Fix web upgrade failure. Align dts compatible string and SUPPORTED
devices in image makefile.

[Release-log]
N/A

Change-Id: Iff4802061dc3f281bdf9729fc9dddcfac1500e14
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5869583
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-2500wan-gsw-spim-nand-rfb.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-2500wan-gsw-spim-nand-rfb.dts
index 7d14b5b..d6eee2c 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-2500wan-gsw-spim-nand-rfb.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-2500wan-gsw-spim-nand-rfb.dts
@@ -4,7 +4,7 @@
 #include "mt7986-spim-nand-partition.dtsi"
 / {
 	model = "MediaTek MT7986b gsw RFB";
-	compatible = "mediatek,mt7986b-gsw-spim-snand-rfb";
+	compatible = "mediatek,mt7986b-2500wan-gsw-spim-snand-rfb";
 	chosen {
 		bootargs = "console=ttyS0,115200n1 loglevel=8  \
 				earlycon=uart8250,mmio32,0x11002000";